Imagine that you are a bush pilot in Africa.
 
You fly-in some critical medical supplies and enjoy a quick lunch at the
hospital.
 
You are eager to get to your next appointment which is "over two hours by
air" away.
 
It's a stifling 110 degrees in the shade.
 
You return to your two engine plane to find that the only piece of shade
around has become very popular, in your absence... You start calculating
the distance to the plane door....
 
 
Whad'ya say? Feeling lucky today?